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147 results about "Structural variation" patented technology

Structural variation (also genomic structural variation) is the variation in structure of an organism's chromosome. It consists of many kinds of variation in the genome of one species, and usually includes microscopic and submicroscopic types, such as deletions, duplications, copy-number variants, insertions, inversions and translocations. Originally, a structure variation affects a sequence length about 1Kb to 3Mb, which is larger than SNPs and smaller than chromosome abnormality (though the definitions have some overlap). However, the operational range of structural variants has widened to include events >50bp. The definition of structural variation does not imply anything about frequency or phenotypical effects. Many structural variants are associated with genetic diseases, however many are not. Recent research about SVs indicates that SVs are more difficult to detect than SNPs. Approximately 13% of the human genome is defined as structurally variant in the normal population, and there are at least 240 genes that exist as homozygous deletion polymorphisms in human populations, suggesting these genes are dispensable in humans. Rapidly accumulating evidence indicates that structural variations can comprise millions of nucleotides of heterogeneity within every genome, and are likely to make an important contribution to human diversity and disease susceptibility.

Building method of library for detecting non-small cell lung cancer gene mutation and kit

The invention discloses a building method of a library for detecting non-small cell lung cancer gene mutation and a kit. The method includes: using tubular reaction to complete genome DNA breaking and connector connection, performing hybrid capture on connection products after amplification and non-small cell lung cancer related gene target area probes, and performing BGISEQ-500 / 1000 platform sequencing and data analysis to obtain mutation conditions. The method has the advantages that the experiment flow is optimized greatly by the tubular reaction, operation complexity and time are reduced, and the requirements on clinical sample initial amount are lowered; multiple genes and multiple sites can be detected in one step, point mutation, insertion and deletion, structural variation and copy number variation are covered, the detecting result is accurate and overcomes the defect that a PCR capture method cannot detect the structural variation in one step, and the effectiveness of the high-throughput sequencing applied to the detection of the non-small cell lung cancer gene mutation; the method is wide in coverage, high in cost performance, capable of providing a reference basis for the diagnosing, treatment and drug use performed by doctors, and the method is suitable for being popularized and used in a large-scale manner.
Owner:BGI BIOTECH WUHAN CO LTD

Complex structure variation detecting method based on hybrid strategy

ActiveCN110010193AReduce interference with assembly performanceImprove accuracyBiostatisticsProteomicsReference genomeBioinformatics
The invention discloses a complex structure variation detecting method based on a hybrid strategy. The method comprises the steps of collecting and performing statistics on inserting fragment length distribution and chain direction information of a read pair in double-end sequencing, determining a read pair contrasting chain direction, an inserting fragment length and the read pair with an abnormal chromosome through two-end read segment contrasting; identifying breakpoints by means of a hybrid strategy of a double-end mapping method, a local assembling method and a split read segment method;wherein the breakpoints are coordinates on a pair of reference genome and are adjacent in a sample and are separated in the reference genome; updating breakpoint position information according to a contrasting result, and changing the breakpoint interval which records the structure variation breakpoint information to an accurate position; wherein the structure variation breakpoint information comprises a structure variation type, a breakpoint starting position and a support read segment number; and recording the contrast quality of the read pair and the read pair number of the support breakpoints, thereby finishing accurate structure variation identification. The complex structure variation detecting method improves variation detecting precision and supplies a checkout method for complex structure variations.
Owner:XI AN JIAOTONG UNIV

Probes, method and chip for detecting alpha and/or beta-thalassemia mutation based on whole-gene capture sequencing and application of such probes, such method and such chip

ActiveCN106591441AEnables detection of deletions in large regionsMicrobiological testing/measurementDNA/RNA fragmentationBeta thalassemiaNew mutation
The invention provides primers, a method and a chip for detecting alpha and/or beta-thalassemia point mutation and deletion mutation based on whole-gene capture sequencing and application of such primers, such method and such chip. The primers, the method, the chip and application thereof have the advantages that through designing of capture probes, relevant genes involved in alpha-thalassemia and beta-thalassemia are enriched and all mutation information including SNP and indel in full-length sequences of genes is detected; through addition of autosome, X-chromosome and Y-chromosome regions as well as upstream and downstream regions of coded genes as references, structure variations such as SNV and CNV are detected; compared with existing various hotspot mutation site detection technologies, the method is capable of detecting hotspot mutation information as well as some rare mutations and undiscovered new mutation types to detect and analyze full-length sequence specificity of target genes, fully covers the mutation types and makes up the defect that a conventional detection method easily causes missing detection of low-frequency mutations and rare mutations greatly.
Owner:SHENZHEN E GENE TECH

Super-long genome-based variation detection algorithm and detection system

The invention relates to a super-long genome-based variation detection algorithm, a Variation Blast algorithm for short. Under the condition that a long sequence is obtained, large-scale structural variations can be generally detected by comparing a sequence with a reference genome; and because a sequence spanning structural variations can generate part of segments matching a reference sequence, and then by virtue of the comparison between part of the segments of the sequence and corresponding segments of the reference sequence, an accurate point position of the structural variations can be detected, the Variation Blast detects the comparison between every sequence and the reference genome by virtue of a successive comparison method, then all the sequences representing the structural variations are classified and screened, and finally, possible structural variations and respective types thereof are obtained from comparison sites and directions.
Owner:WUHAN FRASERGEN CO LTD

Peanut oligonucleotide probes and their design method and use method

The invention discloses peanut oligonucleotide probes and their design method and use method. The peanut oligonucleotide probes comprise eight probes having nucleotide sequences shown in the formulas of SEQ ID NO. 1 to NO. 8. The microsatellite and telomere sequences are used for developing the oligonucleotide probes, the novel oligonucleotide probes are combined into a probe set and oligonucleotide types of the peanut cultivar and wild peanut are constructed, an economic, efficient and high universality peanut cytological marker design technique and chromosome recognition technique are built, peanut chromosome markers are enriched, genomes and chromosomes of the peanut cultivar and wild peanut are identified, and chromosomal structural variation of wild peanut species is identified. Through use of a high-throughput small data simplified sequencing (for only measuring the amount of genomic 4Gb data) and bioinformatics analysis, peanut oligonucleotide probe markers are successfully developed. The invention provides a novel effective method for low-cost and high-efficiency development of peanut cytological markers.
Owner:HENAN ACAD OF AGRI SCI

Method of three-dimensional optimization design for asymmetric cusp magnetic field in mcz single crystal furnace

The present invention discloses a method of three-dimensional optimization design for an asymmetric cusp magnetic field in an MCZ single crystal furnace. An optimization design for structural parameters of the magnetic field comprises first establishing a three-dimensional magnetic model by using an Ansys numerical analysis software; and varying parameters of the model, determining the span between the upper and lower parts of coils, the number of transverse turns of coils and the thickness of the shield based on a set magnetic induction intensity of the magnetic field, and determining the numbers of longitudinal layers of coils in the upper and lower parts of the magnetic field. An optimization design for specification parameters of the coils of the magnetic field comprises first determining a relationship between heat and specification parameters of the coils, determining a relationship between heat transfer of the coils at the copper pipe walls and the specification parameters of the coils, analyzing the heat absorbed by cooling water, establishing an optimization model of a system, and optimizing the specification parameters of the coils of the magnetic field by using the Ansys software. According the method of the present invention, the influence of the structural variation of the magnetic field on the variation of distribution and intensity of the magnetic field is intuitively revealed in three-dimension in view of all aspects, thereby reducing develop period and experiment cost on the cusp magnetic field, and increasing the efficiency of generating magnetic induction intensity by the magnetic field.
Owner:XIAN ESWIN MATERIAL TECH CO LTD +1

Hook type frame concealed curtain wall

ActiveCN101016762AHigh precision quality productsIncreased production requirementsWallsBasementMechanical engineering
The invention discloses a wall-hung type stealth-framed partition, comprising a partition frame, a stationary barrier, a basement, a connecting piece, and a plurality of covering material components consisted with each other, wherein the partition frame is arranged on the stationary barrier via the connecting piece, characterized in that the basement is horizontal equipped with a cross bar which is matched with a plurality of hungers with grooves installed on the partition frame, and the hungers are moveable connected with the partition frame whose one side is equipped with an angle adjusting device, and connected and fixed the hungers with the cross bar. The invention not only supplies a flexible angular adjustment and meets the requirement of poly structural variation of partition and construct, but also has a better spreading value.
Owner:广东齐力澳美高新材料股份有限公司

Method for determining chromosome structure variation signal intensity and insert fragment length distribution characteristics of sample, and application thereof

The invention provides a method for determining chromosome structure variation signal intensity and insert fragment length distribution characteristics of a sample, and application thereof. Specifically, the invention relates to a method for determining a sample source. The method comprises the following steps: (1) comparing sequencing read data of chromosomes in a sample with a reference genome,and determining a low-quality comparison rate and a high-quality comparison rate of the sequencing read data of the chromosomes of the sample; (2) determining the structural variation proportion of the chromosomes of the sample, the content of mitochondrial DNA and the proportion of an insert fragment with a predetermined length based on reads corresponding to the high-quality comparison rate; (3)determining the probability of sample sources based on a predetermined tumor prediction model, the structural variation proportion of the chromosomes obtained in the step (2), the content of the mitochondrial DNA and the proportion of the insert fragment with the predetermined length; and (4) determining the source of the sample based on the probability of the sample source.
Owner:深圳思勤医疗科技有限公司
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